For determining penetration resistance (N Value) of soil which can be related to unconfined Compressive strength, Penetration resistance (N Value) of soil is determined by giving a number of blows with a 65 kg. The sampler is made from a steel tube split lengthwise and held together by a head fitted with a ball check valve and a hardened steel shoe of inside cutting edge of 35 mm dia. The sampler is 35 mm I.D. and 50.8 mm in outer diameter and 508 mm long.

For determining penetration resistance (N Value) of soil which can be related to unconfined Compressive strength, Penetration resistance (N Value) of soil is determined by giving a number of blows with a 65 kg. The sampler is made from a steel tube split lengthwise and held together by a head fitted with a ball check valve and a hardened steel shoe of inside cutting edge of 35 mm dia. The sampler is 35 mm I.D. and 50.8 mm in outer diameter and 508 mm long.

• IS:2131-1963
• IS:9640-1980

For determining penetration resistance (N Value) of soil which can be related to unconfined Compressive strength, Penetration resistance (N Value) of soil is determined by giving a number of blows with a 65 kg. The sampler is made from a steel tube split lengthwise and held together by a head fitted with a ball check valve and a hardened steel shoe of inside cutting edge of 35 mm dia. The sampler is 35 mm I.D. and 50.8 mm in outer diameter and 508 mm long.

The equipment comprises the following: -

• Split barrel 38 mm I.D. 50.8 mm OD and 500 mm long.
• Driving shoe with hardened cutting edge.
• Head assembly with ball valve and adopter to fit to A-rod.